Feeding device



May 8, 1928.` E. SLL 1,669,307

EEDING DEVICE Filed Jan. 18. 192'? L f3, /9 J? /A/VENTR tail on a greater jscale. f f

1 is a part of a paper making machine, a

` ERIK A sLn PATENT OFFICE.

oFsoRrLY, vinymirons,fswEDieiNj,` assieuon 'ro KrimioLAefETy A. g

EKsTRMsMAsKrNAFrR, or STOCKHOLM, SWEDEN.

' FEEDING DEVICE.

Applicationfiled January 18, 1927'Se1'a1 No. 161,932, and in SwedeniMarch 9, 1925;

This invention relates to a feedingfdevice operating with' a ratchet gear and adapted to be used chiefly in combination 'with automatically operating regulating devices. The invention relates more particularly to ratchet gears of that type in whichianumber of engaging members, for which a controlling'device is provided', are mountedvon an oscillating carrier common to the same.

According to the invention the lsaid carrier and controlling device are independent of Tone another and the controlling device solarranged, that the saine wheiroccupying f t,a normal position4 prevents the engaging members from entering vinto 4;engagement with a motion transmitting ',memberl but when shifted to other positionsfpermits some one of the engaging membcrszto enter into engagement with thesaid motion transmitting member, the direction ink which the `member lastmentioned being moved, being dependent ron the engaging member` which is operative. The newuarrangement of the feeding device involves certain..advantages which are of special/importance, when the deviceis used in combination with automatin cally operating regulating devices.

The invention also comprisescertain kdetails, which are explained below. in connec tion with a form of execution, diagrammatically shown in the accompanying drawing and adaptedto means automatically controllingthe supplying of paper pulpin paper making machines. v4 i Fig. lis a side view of the ratchetgearing applied to a paper makiiig machine.v Fig, 2 is a plan 'View of the main parts of the saidgearing, and Figs. 3 and .4 show a de-l layerofpaper pulp spread on the `Wirebeing shown. .2 is the supply pipe ior the paper pulp 'and 3` is a valve conti'ollingthe supply of, paper pulp. A float 4 rests on 'thepulp and is by means of a link 4* `connectedwith a lever arm 5 pivotedat 6. A motion transmitting member @consisting forA instance of agrooved disc, isfiixed lto or made in tegral with a rotatable shaftfS.' With the said disc/7 or. the shaft 8 is suitablytcom nected ay rope pulley `9V and around they same and a pulley 11, fixed on `the "spindley of the valve 3, a :rope v10Vpasses. An-arm 12 is swingable on the shaft 8 which bymea-ns of a link 13is vconnectedwitha crank disc `111, which imparts to the arm 12 an oscillating *movement* Crank `disc 14 is rotated continuously and at a predetermined velocity f by .any`- suitable source oflpowerl The free end of arm lQhastheshapef of across. To the arms of the crosstwo engaging members oil pawls l5 and 16 respectively are pivotedg. `Said members consistlofiy friction pawls` which are located right'iabove ythe groove ofthe dise 7 and adaptedto engage the disc 7,'actedxuponby gravty,by Weights or springs. The turning pointsof the pawls are located at the same distances kfrom the shaft 8. `The engaging members 15 andl are provided withprojections or pins 1,7 and i8. respectively, which normally bear against and slide on aguide member 19 fixed `to a short shaft 20, ljournaled in a supvportyl.` vhaft't 20 hasta crankarm Q2, to

whicha link ora comparatively stiiil spring 23 isuiiXed, the `tree end of the saidspring being fixed to a linkl 24 pivotallyconnected i with` the arm 5. i

yThe described mechanism operates in the vpaper Apulp to vthepapery making machine is normal, float` 4, which yin the `present case `constitutes the; impulse member g actuating thefshiftingmechanism, occupies a certain normalposition, inrwhichthe arm and link` system 5, 24 and spring 23 occupythe posin tion shown `in Fig. land hold the guide member 19 in a certain normal or medium this results in the ylink 24 being moved lupwards and the spring 23 turning the shaft E20 in a yieldable manner, so that the right hand part of the guide member 19 is swung downc Wards. Aspin 18 is then moved to vits right most position it is disengaged from the guidemember 19, so that pawl 16 canengage disc` 7 and turn `thehsame 'through `acertain .angle clockwise. This vrotary `motion f is transmitted to the pulley 9 and the pulleyll of the valve 3, which thus'is adjusted for ka iesy following manner. l`Vthilef the `supply of' S0 reduced supply of paper pulp. If the level of the paper pulp. nevertheless still rises, oat 4 is raised more and more, which evidently results in the guide member lt). being turned through a further distance, so. that pawl 1G during its reciprocating movement remains in engagement with the `disc 7 during a longer period and the rotary motion of the said disc is increased per unit of time the more 'lloat l is moved from its lloli'mal: position. rlhis results in the reducing of the passage through the valve taking place at an increased rate, counted from the'noi'mal position of the valve, which, evidently is of a certain import-anc Il: on the other hand vfloat 4 sinks to a level below its normal position, owing to the sinlfing of the level ot the paper pulp, the left handpart oitthe guide member 19 will be swung downwards.tromthe normal position, which results in the pawl l5 engaging the grooveddisc 7 and rotating the same counter-clockwise, so that valve 3 is so shitted that the supply is increased.

The shape of the guide Ways of the member 19, on Which the pins: 127 and I8 slide, may, evidently, be modified in many Ways and are adapted to the regulating conditions in each case. Generally it might be most practical that the said' guide Ways have such a shape rthat the member to be shiftedis shifted through a shorter rdistance per `unit of time at a smaller variation of the progress of Work than at a greater variation. i

In order that the mechanism may operate in a Wholly reliable manner, it is suitable that there is a certa-in degree of elasticity in the moti-on transmitting device between the tloat or impulse member and the guide member 19. In the iorm of execution shown in the drawing the said elasticity is effected by the llink 24 being connected with the crank arm 22 by means of a spring The said engaging members l5 andi 16, preferably, are. constructed in a special manner, soA that they may easily be adjusted. Figs. 8 and 4 show such an adjustable en.- gaging men'iber consisting of a carrier,in which is slidable a pin 25, the lower end-f of which is shaped like a chisel or the like and is adapted to engage the groove of the disc 7. The top end of the pin having a shorter diameter is slid into a nut 26 screwed into the carrier. Between the said nut 2G and a Washer 27 iixedto the top end. of the pin a coil spring 28 is located, which keeps the pin 25 in an` upper position, determined by an abutment 29 provided on the pin and bearing against the nut 26, but permits the pin to'be adjusted by turning the nut 26, it the pin owing` to Wear or for any other reason does not engage the dise-V7' in a reliable manner. `Ofwing to the described arrangement the pin 25y may easily bev removed for the adjusting of its chisel shaped end. The

.valve3-) has been shifted to one of its end positions i. e. is Wholly opened or closed, the members et the 'mechanism may be subjected to damage and for that reason an automatically operating disengaging device of any known construction preferablyis provided i In the. above specification the feeding mechanism has been describedy combined with an automatically operating controlling device for paper making machines. The said applying of the feeding mechanism, evidently,is'stated only as an example` ofthe practica-l use `ont the invention, as the feeding mechanism may be used for a plurality of purposes for instance for the controlling of pulp strainersoff ditlierent types and generally -in adjusting, feeding and motion transmitting devices of different kinds. Feeding mechanisms arranged in accordance Witli'the invention are suitablespecial-` ly for all such adjusting andmotiontransmitting devices, in Which a continuousvparallel motion is tof be converted into a `rotary motionehanged periodically regarding the direction and regarding the duration of the periods.- They feeding` mechanism may, however, be lused for the transmitting of a 100 certain parallel movement toanother parallel movement. In` the easelast mentioned a reciprocating lsubstari-tially rectilinear motionv is impart-'edito the engaging member, and the said vmembers are adapted: to. engage 105 a slide or the like.

Further, it may be stated that the invention is not limited to the details described above and' shovvnin the dra-Wing. 'Iili'ie details may, evidently, be varied 4in many Ways 110 Without exceeding the limits of the invention. As an example may be mentioned that the engaging members 15 and 16v may conisist of pawls engaging ratchet Wheels, the teeth ot' which have opposite directions.

I claim: v

l. Feeding mechanism comprising a carrier to which oscillating motionisl imparted, av number of engaging members provided on the carrier, a motion transmitting member, a guide member independent of'said engaging members but adapted, WhenV occupying a certain normal position, tol'ooselysupport the engaging members andi prevent the same froml entering into active eng-agment relatively to the motion-*transmitting member' andi means f tor vshifting 'the guide member to. other positions to. permit a diesired engaging member entering in to active engagement with thek motion transmitting i member, the motion direction of the actuto the amount of said shifting of the guide.y

member. y y

2. Feeding device according to claim l characterized by the engaging members consisting of friction paWls, which acted upon by their Weight tend to engage the motion transmitting member, grooved disc.

3. Feeding device according to claim 1, characterized kby the operative parts of the engagingmembersconsisting of adjustable and interchangeable pins `mounted in turnable carriers.

In testimony whereof I havehereunto affixed my signature.

ERIK SLL.

consisting of a 

